5.3 Detach for PMIP-based S5/S8

4.12 Multiple PDN Support

4.10 QoS Concepts

4.11 Charging for Non-3GPP Accesses

4.13 Detach principles

4.6 Identities

4.7 IP Address Allocation

4.8 Network Discovery and Selection

4.9 Authentication and Security

4.3 Network Elements